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Namco System ES1 has 3 stages of protection. You can use TPM as a certificate storage for banking clients, VPN and SSH access, and it’s truly disappointing it’s used by a very limited number of people, as it’s cheap (≈$10, cheaper then usual smart card), it’s features and that fact that numerous laptop models already have it, even more, latest Intel CPUs have it as a firmware feature and now it’s available for everyone.
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If we encrypt data that way, any modification of BIOS/UEFI, bootloader, GRUB modules, the kernel, initrd or even kernel command line would lead to decryption failure because of mismatching PCRs.Īs far as I’m aware, Microsoft BitLocker is the only popular software which utilizes TPM. TPM can encrypt arbitrary data with it’s RSA key binding to PCR values, and one would be able to decrypt it only if all PCR values are exactly the same as they were. These boot loaders send themselves to TPM (GRUB stage1 and stage2), their settings and loaded modules (kernel, kernel command line and initrd, in case of Linux). To measure everything after MBR/EFI Bootloader, there are TPM-aware bootloaders which can extend everything they boot: TrustedGRUB, TrustedGRUB2, GRUB-IMA. extends TPM PCRs) everything which is used in boot process right after powering on: BIOS/UEFI Boot Block, BIOS/UEFI itself, UEFI services, SMBIOS, ACPI tables, Option ROMs (in the network card as an example), MBR, EFI Bootloader, partition tables and a lot of other stuff.īIOS/UEFI can’t measure anything after MBR or EFI bootloader is loaded, so, in the case of Linux, kernel and initrd are not extended to the PCR. Motherboard BIOS/UEFI, if it follows Trusted Computing Group (TCG) specifications, measures (i.e. In other words, if you supply NEW_HASH to the TPM, it does the following: PCR = SHA1(PCR + NEW_HASH) These registers can’t be reset or set to exact value, they can only be extended with new value, from which TPM would take SHA-1 hash sum concatenated with old value. The most interesting feature of TPM are Platform Configuration Registers (PCRs) which you can extend with a SHA-1 sum of arbitrary data.
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It also has small non-volatile memory (NVRAM) to store user-supplied data, random generator (RNG) and some other stuff. TPM is a neat thing, something like a smart card, which has manufacturer supplied RSA key, ability to generate your own keys that way the private part would never leave the device, or import existing ones. The feature of this platform is that is has Trusted Boot with Static Root of Trust using Trusted Platform Module (TPM) version 1.2 which is soldered to the motherboard. I saw only 4 games in Russia and Ukraine: Tank! Tank! Tank!, Dead Heat, Dead Heat Riders and Nirin. The last game has been released in 2014, it’s safe to assume we won’t see any new titles for this platform. There are 9 games for ES1, 4 of which are for Japanese internal market only. Mounted horizontally unlike Tank! Tank! Tank! version. Photo of System ES1 which came with Dead Heat game.